CN101859026A - The image projection device of optical combiner and use optical combiner - Google Patents

The image projection device of optical combiner and use optical combiner Download PDF

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Publication number
CN101859026A
CN101859026A CN201010144534A CN201010144534A CN101859026A CN 101859026 A CN101859026 A CN 101859026A CN 201010144534 A CN201010144534 A CN 201010144534A CN 201010144534 A CN201010144534 A CN 201010144534A CN 101859026 A CN101859026 A CN 101859026A
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CN
China
Prior art keywords
light
lens
wavelength
optical combiner
optical
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Pending
Application number
CN201010144534A
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Chinese (zh)
Inventor
伊与田义智
井上享
佐野知巳
多久岛道子
岛津贵之
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Publication of CN101859026A publication Critical patent/CN101859026A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1086—Beam splitting or combining systems operating by diffraction only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
    • G02B27/104—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources for use with scanning systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Lenses (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

The invention discloses a kind of optical combiner and use the image projection device of this optical combiner.This optical combiner is formed from a resin, and the number of the parts of its use can reduce.This optical combiner comprises first surface, diffraction grating and second surface.First surface provides the surface of first lens, second lens and the 3rd lens.Diffraction grating will be incident on the light with first wavelength on first lens, be incident on the light with second wavelength on second lens and be incident on the optical diffraction with three-wavelength on the 3rd lens on common optical pathways, and this common optical pathways is led to second surface.Second surface sends by common optical pathways and is incident on light on this second surface.Light path and common optical pathways from the first surface to the diffraction grating are made by resin.

Description

The image projection device of optical combiner and use optical combiner
Technical field
The image projection device that the present invention relates to optical combiner and use this optical combiner.
Background technology
In Japanese Patent Application Publication document No.2008-033042, Japanese Patent Application Publication document No.2004-334082, international open source literature No.2005/073798, Japanese Patent Application Publication document No.2007-121899, Japanese Patent Application Publication document No.2006-267457 and Japanese Patent Application Publication document No.2008-216456, disclosed image projection device.Under many circumstances, image projection device is equipped with three light sources, lens, combiner and scanning mechanisms that are used for RGB.Lens make the optical convergence that sends from three light sources, combiner combination rgb light line, and the light that scanning mechanism scanning is made up, thus image obtains showing.In combiner, use dichroic mirror, prism, diffraction grating device etc.Thereby, be difficult to reduce use the size of the image projection device of many parts.
Summary of the invention
The optical combiner that the object of the present invention is to provide a kind of part count to reduce also provides a kind of image projection device that uses this optical combiner.
To achieve these goals, provide a kind of optical combiner that is formed from a resin.This optical combiner comprises first surface, diffraction grating and second surface.First surface provides the surface of first lens, second lens and the 3rd lens.Diffraction grating will be incident on the light with first wavelength on first lens, be incident on the light with second wavelength on second lens and be incident on the optical diffraction with three-wavelength on the 3rd lens on common optical pathways, and this common optical pathways is led to second surface.Second surface sends by common optical pathways and is incident on light on this second surface.Light path and common optical pathways from the first surface to the diffraction grating are made by resin.
This optical combiner can be by carrying out integrally moulded formation to resin.First lens, second lens and the 3rd lens can be Fresnel lenses.
An alternative embodiment of the invention is a kind of image projection device, and this image projection device comprises optical combiner of the present invention, first light source, secondary light source and the 3rd light source and scanning mechanism.First light source is used to send the light with first wavelength, and secondary light source is used to send the light with second wavelength, and the 3rd light source is used to send the light with three-wavelength.The optical combiner that sends combined light will make up on common optical pathways from the light beam of first light source, secondary light source and the 3rd light source.Scanning mechanism is used to scan the light by the optical combiner combination.
Rely on according to structure of the present invention, a kind of optical combiner that can reduce part count can be provided.In addition, owing to the light path from first lens, second lens and the 3rd lens to second surface is formed from a resin, so optical combiner can effectively be resisted external disturbance.The image projection device of present embodiment is equipped with the above-mentioned optical combiner of part count minimizing, therefore can reduce the size of image projection device.
Description of drawings
Fig. 1 illustrates the conceptual schematic view of optical combiner according to an embodiment of the invention.
Fig. 2 illustrates the conceptual schematic view of image projection device according to an embodiment of the invention.
Embodiment
Hereinafter, with reference to accompanying drawing preferred implementation of the present invention and advantage are described.
In the accompanying drawings, identical Reference numeral is represented identical parts, and omits the repeat specification to same parts.
Fig. 1 is the conceptual schematic view of optical combiner 10 according to an embodiment of the invention, and Fig. 1 shows the cross section of optical combiner 10, the optical axis that this cross section comprises the optical axis of the light L1 with first wavelength, the optical axis with light L2 of second wavelength, the optical axis of light L3 with three-wavelength and combined light LM (for example, light L1 with wavelength (R), the light L2 with wavelength (G) with the light L3 with wavelength (B) is and three kinds of corresponding light of color of RGB).Optical combiner 10 is the parts that are formed from a resin.Optical combiner 10 comprises first surface 10a, second surface 10b and diffraction grating 10c.
First surface 10a is light L1 with first wavelength, have the light L2 of second wavelength and have the light L3 incident surface thereon of three-wavelength.First surface 10a provides the first lens 12a, the second lens 12b and the 3rd lens 12c.The first lens 12a is the lens that are used to make the light L1 convergence with first wavelength.The second lens 12b is the lens that are used to make the light L2 convergence with second wavelength.The 3rd lens 12c is the lens that are used to make the light L3 convergence with three-wavelength.
Second surface 10b sends (outgoing) surface by the light LM of optical combiner 10 combinations.Second surface 10b can be the plane, perhaps also can be to form the surface of lens as shown in Figure 1.
Diffraction grating 10c will be diffracted on the common optical pathways of combined light LM by the light L1 with first wavelength that first lens are assembled.In addition, diffraction grating 10c will be diffracted on the common optical pathways of combined light LM by the light L2 with second wavelength that second lens are assembled.In addition, diffraction grating 10c will be diffracted on the common optical pathways of combined light LM by the light L3 with three-wavelength that the 3rd lens are assembled.Diffraction grating 10c is made of first medium (resin) that is arranged alternately and second medium (for example air).Can determine the kind of the medium of formation diffraction grating 10c, the size of each grating etc. according to the light wavelength for the treatment of diffraction.
For example, optical combiner 10 can be by carrying out integrally moulded formation to cyclic olefin polymer or polycarbonate.
Fig. 2 illustrates the conceptual schematic view of image projection device 20 according to an embodiment of the invention.Image projection device 20 comprises video signal processing unit 22, driver 24a～24c, light source 26a～26c, optical combiner 10 and scanning mechanism (scanner) 28.
Video signal processing unit 22 receives the vision signal that is input among the input terminal IN, and generates various rgb signals.For example, the vision signal that is imported in the video signal processing unit 22 is a composite video signal.Video signal processing unit 22 is connected with driver 24a～24c, and the intensity of the so various rgb signals that generate of video signal processing unit 22 bases outputs to these drivers with electric signal.
Driver 24a is used for modulated light source 26a so that make it send the circuit of the light with first wavelength (R).Driver 24b is used for modulated light source 26b so that make it send the circuit of the light with second wavelength (G).Driver 24c is used for modulated light source 26c so that make it send the circuit of the light with three-wavelength (B).Driver 24a～24c is connected with light source 26a～26c, and driver 24a～24c outputs to modulation signal light source 26a～26c respectively.
For example, light source 26a～26c is a laser diode.Light source 26a sends the light with first wavelength with the intensity that conforms to modulation signal from driver 24a.Light source 26b sends the light with second wavelength with the intensity that conforms to modulation signal from driver 24b.Light source 26c sends the light with three-wavelength with the intensity that conforms to modulation signal from driver 24c.
Light source 26a～26c is connected with optical combiner 10 light.Light beam from light source 26a～26c makes up by optical combiner 10, and sends from optical combiner 10 as combined light LM.Optical combiner 10 is connected with scanner 28 light.
The light that scanner 28 scanning is sent from optical combiner 10 also is presented at image in the projection surface.For example, scanner 28 can be made of current mirror that is used for horizontal scanning and the current mirror that is used for vertical sweep.
Hereinafter, function and the effect to optical combiner 10 and image projection device 20 describes.Optical combiner 10 is the parts that are formed from a resin, and in optical combiner 10, diffraction grating 10c, the first lens 12a, the second lens 12b and the 3rd lens 12c form as one.Like this, optical combiner 10 can provide the function of a plurality of optical elements with single parts, thereby can reduce part count.In addition, in optical combiner 10, there is no need to carry out for example position adjustment of optical elements such as diffraction grating 10c, the first lens 12a, the second lens 12b and the 3rd lens 12c.In addition and since have various wavelength light the light path of process and combined light the light path of process make by resin, so optical combiner 10 can effectively be resisted external disturbance.Can reduce to use the size of the image projection device 20 of above-mentioned optical combiner 10, and this image projection device 20 can effectively be resisted external disturbance.
Hereinbefore, describe the present invention based on the preferred embodiment in the practicality; Yet the present invention should not be confined to the foregoing description, and the various modification in the scope of the present invention all are feasible.For example, first lens, second lens and the 3rd lens can be Fresnel lenses.In this case, can make the thickness attenuation of first lens, second lens and the 3rd lens.In addition, first lens, second lens and the 3rd lens also can be gradient-index lens.Image projection device of the present invention is not limited to image projection device that light source is modulated.For example, can come modulating from the light that light source sends according to rgb video signal by modulator with constant intensity.

Claims (4)

1. optical combiner that is formed from a resin comprises:
First surface, it is provided for having the 3rd lens that first lens of the light of first wavelength, second lens and being used to that are used to have the light of second wavelength have the light of three-wavelength;
Second surface, it sends combined light; And
Diffraction grating, it will be incident on the light with described first wavelength on described first lens, be incident on the light with described second wavelength on described second lens and be incident on the optical diffraction with described three-wavelength on described the 3rd lens on common optical pathways, described common optical pathways is led to described second surface, and light path from described first surface to described diffraction grating and described common optical pathways are made by resin.
2. according to the described optical combiner of claim 1, wherein,
Described optical combiner is by carrying out integrally moulded formation to resin.
3. optical combiner according to claim 1 and 2, wherein,
Described first lens, described second lens and described the 3rd lens are Fresnel lenses.
4. image projection device comprises:
First light source, it is used to send the light with first wavelength;
Secondary light source, it is used to send the light with second wavelength;
The 3rd light source, it is used to send the light with three-wavelength;
According to each described optical combiner in the claim 1 to 3, described optical combiner will be from the light of described first light source, make up on described common optical pathways from the light of described secondary light source with from the light of described the 3rd light source, so that send the light that is made up; And
Scanning mechanism, it is used to scan the light by described optical combiner combination.
CN201010144534A 2009-04-10 2010-04-09 The image projection device of optical combiner and use optical combiner Pending CN101859026A (en)

Applications Claiming Priority (2)

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JP2009-095711 2009-04-10
JP2009095711A JP2010243987A (en) 2009-04-10 2009-04-10 Optical combiner and image projector using the optical combiner

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US (1) US8098435B2 (en)
EP (1) EP2241928A1 (en)
JP (1) JP2010243987A (en)
KR (1) KR20100113025A (en)
CN (1) CN101859026A (en)
TW (1) TW201044016A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109031871A (en) * 2018-08-15 2018-12-18 青岛海信激光显示股份有限公司 A kind of laser light source and laser-projector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104252043A (en) * 2013-06-26 2014-12-31 无锡和瑞盛光电科技有限公司 Flow cytometer multi-wavelength excitation laser cluster method and device
JP7270219B2 (en) 2019-10-07 2023-05-10 パナソニックＩｐマネジメント株式会社 Optical multiplexer and image projection device using the same

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870268A (en) 1986-04-02 1989-09-26 Hewlett-Packard Company Color combiner and separator and implementations
US4930864A (en) * 1988-08-02 1990-06-05 Eltec Instruments, Inc. Domed segmented lens systems
US5459611A (en) 1993-08-18 1995-10-17 Hewlett-Packard Company Beam splitter/combiner with path length compensator and method for making the same
US5801889A (en) * 1995-08-16 1998-09-01 Eastman Kodak Company Technique to eliminate scattered light in diffractive optical elements
US5751492A (en) * 1996-06-14 1998-05-12 Eastman Kodak Company Diffractive/Refractive lenslet array incorporating a second aspheric surface
US6496465B1 (en) * 1998-06-09 2002-12-17 Barry G. Broome Monolithic CD/DVD read/write head
JP2003066271A (en) * 2001-08-22 2003-03-05 Nippon Telegr & Teleph Corp <Ntt> Optical wavelength demultiplexing element
JP2004334082A (en) 2003-05-12 2004-11-25 Plus Vision Corp Illumination optical system using semiconductor laser device as light source and projector utilizing the same
JP2005073798A (en) 2003-08-28 2005-03-24 Olympus Corp Puncture needle device for endoscope
JP4188795B2 (en) * 2003-10-07 2008-11-26 リコー光学株式会社 Optical power combining optical system and light source module
US20080225361A1 (en) 2004-01-29 2008-09-18 Matsushita Electric Industrial Co., Ltd. Light Source Device, and Two-Dimensional Image Display Device
JP2006267457A (en) 2005-03-23 2006-10-05 Hoya Corp Illumination optical system
ATE406587T1 (en) * 2005-04-21 2008-09-15 Konica Minolta Opto Inc OPTICAL TRANSMISSION MODULE AND OPTICAL ELEMENT FOR AN OPTICAL TRANSMISSION MODULE
JP2007121899A (en) * 2005-10-31 2007-05-17 Minebea Co Ltd Device for synthesizing optical path and method of synthesizing light beam
JP2008033042A (en) 2006-07-28 2008-02-14 Sony Corp Projection type display device
JP2008216456A (en) 2007-03-01 2008-09-18 Sanyo Electric Co Ltd Projection type color projector device
JP2008224760A (en) * 2007-03-08 2008-09-25 Seiko Epson Corp Projector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109031871A (en) * 2018-08-15 2018-12-18 青岛海信激光显示股份有限公司 A kind of laser light source and laser-projector

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US20100259729A1 (en) 2010-10-14
JP2010243987A (en) 2010-10-28
EP2241928A1 (en) 2010-10-20
US8098435B2 (en) 2012-01-17
TW201044016A (en) 2010-12-16
KR20100113025A (en) 2010-10-20

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Application publication date: 20101013